Clutch mechanism for motor-cycles.



R. L. BAILLY.

CLUTCH MEOHANISM FOR MOTOR CYCLES.` APPLICATION FILED MAY 6, 1912. RENEwEn Nov. 4, 191A.

1,145,225. Ifatnted July 611915.

COLUMBIA PLANOuR/LPH Co..w^sH!NGToN. D. C,

f v`v1@1H-"11DSTM-ES PATENT GRECE! Rosmini.. BAILEmoF PORTLAND, ormeom Assreivon 'rca` L. MAqLEoDyoFronT- .LAgivD.ovREGfoiv.V l v Be it known'that I,` RBERT BAILEY, a

citizen ofthe United States, residing at f and useful Improvements inClutch Mechanism for Motor-Cycles,`v of `whichthe followng is a specification.`

This inventionrelatesf to clutch mechanism particularly adapted foru'se in the propulsion oflrnotorcyclea and vhas forA its ykcnufrcr'r MEGHANISM roagli/[orort-cvomis.A ,p

- f 4pecifcation of iettersfatent.' Paliefd July 6, 1915. `original appiicationsied retru arifiep,i1e 1a sria1"1-w-s7s,f1`2. niviaedrai this ppneationmed iuayye,v Y

1912,.Seriav1 N0695965v Renewed November V4, 19714. Seria1'No" 8"70,305 v (said shaft 9 'thus 'frming .the main drive "shaft'fofthemotorfcycle." p a This' application is, a division of my ,55

earlieri filed (5o-pending application, 'Serial Number 678.472.616@ February 19th,.1912, for apatentfljfor improvements in motor "cycles,y inwhichwas. originally disclosed in y detail the transmissionmechanismin part 60 illustrated 'in the Vaccompanying drawing,

said transmission mechanism havingv subsequently been madethe subject matter of my" divisionalV application iled'May 6th,

objectl'to vprovide meansl whereby the rear y 1912, Serial Number 695,407. Hence the 65 wheel of a motorcycle may be thrown into and out of operation by pressure exertedV on one vof 4the pedals! Q The invention`v further provides means whereby vabrakeinav be applied to the'rear wheel `on the application Aof pressure tothe other pedal, said means being automatically rendered inoperative at the time of "throwing the l clutch; into" operation on]` the 'application of pressurejto fthe'` first named For ar full understanding 4of the present invention, reference isjtobe had to the following descriptionand to the accompanying drawings,- in `which.- l Figure `lfis aview, partly innhorizontal section, and partly inplangshowing the invention applied tothe rear'wheel of la motor o cycle, and showing the connection-s with the pedals. Fig. 2 isa side elevation of the device, Figs. `3, 4 yand `are detailV ,views hereinafter particularlyv referred to..

Throughout the followingdetail description and on' the' several figures4 of-the drawings, similar parts` are referred to by like reference characters.

VReferring to the drawings by'numerals, 1 indicates the right .pedal-cfa motorcycle, 2 the left pedal and 3 v'the crank shaft carrying the saine.,y Diametrically oppositely disposed, .radially extending` crank arms 4 andv 5 are xedtothecrank shaft 3 and Aare spaced laterally thereon. vThe `crank arms 'ofthe shaft `3, -that is the arms carrying pedal 2, are disposed in planes substantially -at right anglesftogthe Vplanes,ofthe crank iirms 4 and 5. y y l l The engine shaft carries amiteredgear 6 which meshes fwith as imilagearfSixed ,on ,shaft a for dri'viiingeelaeresta@ crank shaft e. y

16 represents `a universal joint' connected 95v 1 with the shaftl and with the shaft 17,

transmission mechanism is not'l illustrated in the* accompanying drawing in minute detail butcnly suiiiciently vfor being understood ,in its general construction and arvrangement. Such" transmission mechanism,

as s hownv in the accompanying drawing, consists of the gear wheels` 10, 11 and'12,

'the first beingiXed on the main drive shaft 9 and the .second being slidingly mounted 'lona shaft 1 3. Gear 12 is fixed 'on a stub 75 shaft, not illustrated. 'Gears 10l and 11 are provided with coperating clutch members fon their adjacent faces adapted to be thrown into and out'of'engagement by thelateral l v 'shifting of thegearll falong the shaft v13. 80

Thus shaft 13 andshaft 9 may be'connected for direct drive, the movement to'and from the clutch-engagingr position being adapted to be effected through the shifting of a yoke plication The'shiftin'gofthe rod 15' is con-y trolled, as indicated in Fig. 1.,.bylocking apparatus adapted.. to) be factuated the which latter constitutesvv the drive shaft for the hub of thefrearvwheel'. The rear end `of the drive shaft 1"? `carries abevel gear wheel 18,of the,formparticularly yshown .in Fig. 100 1, 'and' constitutesthe means by `which,the .rearuwheellis driven, t l ,iewheel 18 always revolvingl with '1 the "shaft 17.

@passerella @elevated #1f-th@ @ik l l2, thus also cured to the rod. The plunger works in a spring barrel 21, which latter is integral with a rod 22. A. coiled spring 23 is disposed within the spring barrel 21 and is connected to the end thereof adjacent to the rod 22, the spring acting on the plunger 20. The rod 22 is connected with a bell crank lever 24 pivoted on the shaft 25, the shaft being connectedin any desired manner with the frame of the machine. At the point 26 of the bell crank lever particularly shown in Fig. 2 and at point 27 on the link 28 rigidly connected with the lever, are connected the two free ends of a brake band 29 which, as is shown in Fig. 2. passes entirely around the brake drum 30. lThe brake drum 30 is rigidly connected to the outer hub 31 of the rear wheel so that when the brake band 29 is tightened, a Vbraking action may be applied to the rear Wheel so as to reduce the speed of the same. When downward pressure is applied'to the right pedal 1, the crank 4 is moved to the left, as seen in Fig. moving the rod 19 in the same direction. This will cause the plunger 20 to `move through the spring barrel 21, thus placing the coiled spring 23 under tension. As the end of the coiled spring is connected to the end of the spring barrel where the rod 22 `ioins the same, this will result in the spring moving the spring barrel to the left, thus turning the bell crank lever 24 on its axis and, in a manner which will be obvious, tightening the brake band 29 about the brake drum 30. This will result in the speed of the rear wheel being reduced, or in the wheel being brought to a full stop.

' The purpose of the arrangement of the rods 19 and 22 and spring barrel 21 with its contained spring, is to provide a device which will be adapted to take up lost motion and which will automatically eHect the loosening of the brake band when the clutch mechanism hereinafter described,`is brought into operation by pressure on the left pedal 2. I will now proceed to particularly describe the manner in which the clutch mechanism is operated.

A rod 32 is connected preferably in a pivotal manner to the upstanding crank, the rod 32 extending in generally the same direction as the rod l19, and being connected at its rear end with van ear 33, which latter is integrally connected to the outer periphery of an outer pressure piece 34, the arrangement and disposition of which is shown in Figs. 1 and 2. The outer pressure piece 34 is adapted to move on the ball bearings 35 and around the inner hub 36, which latter is best shown in Fig. 1. 1t will be apparent that on the application of downward pressure to the left pedal 2, the upstanding crank will be moved tov the left, as seen in Fig. 2, which action will result in pulling the rod 32 in the same direction, thus rotating the outerk pressure piece 34 on the hub 36.

The member 34 is provided on its inner side with two inclined faces 37 and 38, these faces being formed in the periphery of the member 34 and are of the arrangement and shape best illustrated in Fig. 4. An inner pressure piece 39 is keyed onto the hub 36 by means of the keys 40 and 41, the pressure iece 39 being. thus incapable of rotary ,movement with respect to the hub but capable of movement in a lateral direction. The inner pressure piece 39 isl provided on its side which lies adjacent'to the inclined faces 37 and 38 ofthe member 34, with two inclined faces42 and43, ofthe shape best shown in Fig. 3. The two inclined faces of the member k39k engage the correspondingly inclined faces 37 and 38 of the member 34 the `face 37 lying against and sliding upon the face 42 and the face 38 lying against and sliding upon the face 43. By v,this construction, it will be seen that as the rod 32 is moved lto the-left, as shown in Fig. 2, resulting in the partial rotation of the outer pressure piece 34, the inclined faces of the outer pressure piece sliding upon those of the vinner pressure piece 39 will` cause the latter tobe pressed inwardly, that is, laterally with reference to the axle 44 of the rear wheel. The pressure piece 39 is upwardly and -outwardly flared, as is best shown in Fig. l, this flared portion serving for the reception of a pressurering 45 which forms a part of the ball thrust bearings. The latteralso include the ball race 46 and the ring 47 which is disposed on an opposite side of the ball race to the position occupied by the ring 45.y A circular disk 56 is located adjacent to the ring 47 and between the disk 56 and the outer end of the inner hub are disposed the friction disks, which will now be described. These consist 'of a'series of'concentric rings which, when the machine is at a standstill, will be more or less loosely arranged side by side. These friction disks consist of two sets 48 and 49, alternately arranged, the set of disks 48 being keyed upon the intermediate hub 50 by means of the keys 51, as is particularly shown in Fig. 1. The'disks 48 will, of course, be incapable of rotation with reference to the intermediate hub 50 but they are capable of lateral or vlongitudinal movement thereon. The set of friction disks 49 are keyed upon the outer hub 31 by means of the keys 57 Vand are likewise incapable of rotation with reference to the outer hub, but are capable of lateral movement with respect thereto. A. bevel gear 52 is secured to the intermediate hub 5 01so as to turn with the latter, the bevel gear 52 being arranged on a ball race 53 which surrounds the outer portion of the inner hub 36. The spokes are attached to the' outer hub 31 by means of the spoke flanges 54 and 55.

It will be seen from the foregoing 'description that as the inner pressure piece 39 is moved lengthwiseof the inner hub 36 so as to force inwardly the ball thrust bearings and thus press the alternate sets of disks 48 and 49 closely together so that they frictionally engage each other, the intermediate hub 50, which isintegral with the bevel gear 52 and rotates therewith, will carry with it the outer hub 31 through the agency of the closely gripped disks 49, and thus rotate the rear wheel of the machine. -At the time this clutch mechanism is thrown into operation in the manner described by the movement of the left pedal 2 downwardly, the crank 4 will, at the same time, be moved to the right, as seen in Fig. 2, which will result in the spring barrel 21 moving to the right, asy a result of the loosening of the tension of the coiled spring 23. This will move the bell crank lever 24 to the right, causing the brake band 29 to be loosened and the rear wheel will be permitted to rotate as soon as the clutch mechanism is rendered eective.

Having thus described the invention, what is claimed as rnew is:

1. .In a motorcycle, a driving wheel, means for driving said wheel including a clutch, said clutch comprising a portion forming the outer hub of the wheel, an intermediate hub portion, a plurality of clutch disks interposed between the outer and intermediate hub portions and alternately keyed thereto,

pedal controlled means for operating said disks, an inner hub portion for said driving wheel, a brake drum connected with'said outer hub portion, a brake band adapted to p pass around said brake drum, and connections between the brake band and the pedals i whereby the band may be caused to engage the drum on the application of pressure ,to the pedals.

2. In a motorcycle, a driving wheel, means for driving said wheel including a clutch, said clutch comprising a portion forming the outer hub of the wheel, an intermediate hub portion, a plurality of clutch disks inter.- posed between the outer and intermediate l hub portions and alternately keyed thereto,

connections between said clutch and the pedals whereby the clutch may be rendered operative on application of pressure to the pedals, brake mechanism for the driving wheel, and means for operating the latter from the pedals whereby it may be rendered inoperative when the clutch is rendered inoperative.

3. In a motorcycle, a driving wheel, means for driving said wheel including-.a clutch, an inner hub portion for said driving wheel, said clutch comprising a portion Vforming the outer hub of the' wheel, an intermediate hub portion, a plurality of clutch' disks interposed between said outer and intermedi#` ate hub portions `and alternately [keyed thereto, a pressure member arranged on said inner hub portion and capable o f longitudinal movement thereon, a second. pressure member, means carried by said two pressure members whereby thefirstnamed may be caused to move longitudinally on the rotation of the second 'named member, connections between said second named pressure member andthe pedals whereby it may be rotated onthe application of pressure to the pedals, a brake drum connected with said outer hub ,portion so as to rotate therewith, a brake band y passing around said brake drum, and connections between said brake band and the pedals whereby the band mayy closely engage the brake drum on the application of pressure tothe pedals.

4. In a motor cycle, adriving wheel lcomprlsing'an inner, intermediate andouter hub p f. portions, a gear wheel connected with said intermediate hub portion so as to'turnuthere with, a driving shaft,connections vbetween said driving shaft and said gear wheel whereby the latter maygbe'rotated, a plurality of disks disposed between the outer and intermediate hub portions, ,said disks consisting of two sets, the individual members of which are alternately keyed to said outer and intermediate hub portions, a pressure member keyed to said inner hub portion andl capable of longitudinal movement thereon, thrust bearings between said pres'- sure member'andsaid disks, a second pres-v sure member, said two pressure members being provided with inclined portions at their i y 1 y `the second named pressure member the iirst 'p engaging ends whereby on the rotationl of In testimony whereof I affix my signature y in presence of two witnesses.

- ROBERTL. BAILEY.k yWitnesses: l

JAMES OCoNNoR, E. H. HooNER.

C'opies of this patent may be obtained for ive cents each, by addressing' the Commissioner of Patents,

Washington, D. C. 

